| 温敏性线型共聚物对金属离子的吸附 |
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| 引用本文： | 张剑波.温敏性线型共聚物对金属离子的吸附[J].环境科学学报,1999,19(4):390-393. |
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| 作者姓名： | 张剑波 |
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| 作者单位： | 北京大学技术物理学系,北京,100871 |
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| 摘 要： | 利用合成的ＮＩＰＡＡｍ－ＡＡｃ温敏性线型共聚研究了其对无机金属离子的吸附性能，以期应用于水污染的治理，结果表明其有明显的浓度效果，在ＰＨ＝４时，对Ｙ＾３＋，Ｅｒ＾３＋和ＵＯ＾２＋２的浓集率分别达到８４％、６５％和５６％，相应的浓集量分别为１１．２ｍｇ．ｇ＾－１，４．４５ｍｇ．ｇ＾－１和１１．３ｍｇ．ｇ＾－１，并讨论了影响浓集的条件和吸附机理。
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| 关 键 词： | 温敏性线型共聚物 金属离子 浓集 |
| 收稿时间： | 1997/9/29 0:00:00 |
| 修稿时间： | 1998/5/14 0:00:00 |
Absorptivity of temperature sensitivity linear copolymers to metal ions in dilute aqueous solution |
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| ZHANG Jianbo.Absorptivity of temperature sensitivity linear copolymers to metal ions in dilute aqueous solution[J].Acta Scientiae Circumstantiae,1999,19(4):390-393. |
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| Authors: | ZHANG Jianbo |
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| Institution: | Department of Technical Physics, Peking University, Beijing 100871 |
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| Abstract: | Absorptivity of linear copolymers to metal ions was studied in dilute aqueous solution.The conditions of concentration were given and the mechanism was discuses.The concentration effect of poly(NIPAAm\|co\|AAc) was higher than that of polyNIAAm,which was found not only for Er\+\{3+\} but for UO\+\{2+\}\-2 and Cr(VI).Because polyNIPAAm is nonionizing polymer which was not influenced by pH.On the contrary,ionization of poly(NIPAAm\|co\|AAc) took place at high pH.The hydrolysis of these metals was suggested in the pH range of 2 to 4.Concentration effect of copolymer for UO\+\{2+\}\-2 was found at pH 3.The concentration yield increased rapidly with a little increase in pH,because six\|element\|ring compound of COOH with UO\+\{2+\}\-2 was formed.The concentration effect was observed for Er\+\{3+\},UO\+\{2+\}\-2 and Cr(VI). |
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| Keywords: | temperature sensitivity copolymers metal absorptivity |
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